chore(deps): bump com.google.cloud:google-cloud-spanner-jdbc from 2.25.2 to 2.25.3 in /google-cloud-spanner-hibernate-samples

chore(deps): bump com.google.cloud:google-cloud-spanner-jdbc from 2.25.2 to 2.25.3 in /google-cloud-spanner-hibernate-samples #1670